Github user paul-guo- commented on a diff in the pull request:

    https://github.com/apache/incubator-hawq/pull/835#discussion_r73841829
  
    --- Diff: src/backend/cdb/executormgr.c ---
    @@ -864,29 +864,42 @@ addOneOption(PQExpBufferData *buffer, struct 
config_generic * guc)
                        {
                                struct config_string *sguc = (struct 
config_string *) guc;
                                const char *str = *sguc->variable;
    -                           int                     j,
    -                                                   start,
    -                                                   end;
    -                           char            temp[1024];
    +                           unsigned int     j, start, size;
    +                           char                    *temp;
     
    -                           end = strlen(str);
    +                           size = 256;
    +                           temp = malloc(size + 8);
    +                           if (temp == NULL)
    +                                   ereport(ERROR,
    +                                                   
(errcode(ERRCODE_OUT_OF_MEMORY),
    +                                                    errmsg("out of 
memory")));
     
                                j = 0;
    -                           for (start = 0; start < end; ++start)
    +                           for (start = 0; start < strlen(str); ++start)
                                {
    -                                   if (str[start] == ' ')
    -                                           continue;
    +                                   if (j == size)
    +                                   {
    +                                           size *= 2;
    +                                           temp = realloc(temp, size + 8);
    +                                           if (temp == NULL)
    --- End diff --
    
    Yes. Need to take care of.


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